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Annular convoluted hoses & Stainless Steel 316/321 > Minimum Lengths and Pressure Drop


  Minimum Lengths and Pressure Drop

STATIC
Minimum overall length = M (Static) + (2xL)
L - dimension from end fittings

Intermittent flexing
Minimum overall length = M (Static) + (2xL)
M - Dimension from chart below relative to Offset Motion Y
L - dimension from end fittings

 
B-FLEX Nominal size DN mm C-FLEX Nominal size DN mm
STATIC Dimensions 'Y' mm (OFFSET MOTION)
0 15 25 35 50 75 100 125 150 175 200 225 250
6 80 120 150 200
6 10, 12 85 140 180 215
10, 12 20 90 150 190 225 290
25 90 160 205 240 300
20 95 170 220 255 310
25 32 105 185 240 280 335 425
32 110 205 260 305 365 450
40 130 215 275 320 380 470
40 140 250 320 370 440 530 610
50 150 260 335 390 460 560 640 710
50 65 170 300 380 440 520 630 730 800 870 940
80 185 310 400 460 540 650 750 830 900 970
65 100 200 340 430 500 590 720 830 920 1000 1070 1130 1190
80 215 380 500 580 680 820 940 1040 1140 1230 1310 1380 1450
100 125 230 405 525 610 720 875 1005 1120 1225 1325 1415 1490 1560
125 150 245 430 550 640 760 930 1070 1200 1310 1420 1520 1590 1670
150 280 510 650 760 910 1100 1270 1420 1560 1690 1800 1900 1990
200 320 560 710 830 990 1210 1400 1560 1720 1860 1990 2100 2210
250 360 620 780 900 1070 1320 1510 1690 1820 2010 2160 2290 2340
 
Pressure drop
Because of the nature of the bore of a convoluted hose, the pressure drop due to friction is greater than that of a smooth bore pipe. The chart shows the approximate pressure drop for each size of convoluted hose related to a flow rate where water is the fluid. To utilize the chart, read off on the base line the flow rate required. Where a vertical from the selected point on the base line intersects the diameter line, the pressure drop is shown on the vertical axis corresponding to the point of intersection.